You can make a gun. legally. As long as there is no law prohibiting the type. Rifle less than 16"-SBR stamp, pistol with a vertical forward grip of 90 degrees etc. etc.
You don't even need a serial number. You can't sell it though. The picture is probably a prohibited item but check with the ATF they will help guide you to avoid becoming a criminal. I have seen similar designs that the latter 1/3 folds down 90 degrees and sold at local gun shows. I haven't seen them in a while so perhaps they stepped across the line of infringement?
Ask the FBI and who knows they may lead you to be a criminal so they have another "criminal" to add to list and an OER bullet for their evaluation report.
You don't even need a serial number. You can't sell it though. The picture is probably a prohibited item but check with the ATF they will help guide you to avoid becoming a criminal. I have seen similar designs that the latter 1/3 folds down 90 degrees and sold at local gun shows. I haven't seen them in a while so perhaps they stepped across the line of infringement?
Ask the FBI and who knows they may lead you to be a criminal so they have another "criminal" to add to list and an OER bullet for their evaluation report.